Results 21 to 30 of about 30,523 (258)

Research on combined positioning method of shearer onfully mechanized mining face of thin coal seam

Gong-kuang zidonghua, 2019
In order to solve problems of real-time positioning and automatic navigation of shearer, a combined positioning method of shearer on fully mechanized mining face of thin coal seam was proposed for difficulty of meeting requirements of rapid, real-time ...
ZHOU Kaiping
doaj   +1 more source

Development of super-accurate angular encoder system with multi-detecting heads using VEDA method

Journal of Advanced Mechanical Design, Systems, and Manufacturing, 2018
In response to the demand for high accuracy and high resolution of angular positioning and movement of CNC machine tools, the demand for rotary encoder systems has also increased for the detection of ultra- precise angular position and movement.
Nobuyuki ISHII, Kayoko TANIGUCHI, Kazuo YAMAZAKI, Hideki AOYAMA   +3 more
doaj   +1 more source

Research of underground positioning algorithm based on DOA and TDOA

Gong-kuang zidonghua, 2013
In view of problems that current underground positioning system is sensitive to environmental change and has low positioning accuracy, the paper introduced an underground positioning algorithm based on DOA and TDOA. The algorithm takes advantages of high
ZHAI Yan-rong, HUANG Huan, ZHANG Shen, MA Xiu-ping, LIU Wei, YOU Chun-xia   +5 more
doaj   +1 more source

Angular Position of Nodes in the Superconducting Gap of YBCO [PDF]

Physical Review Letters, 1997
The thermal conductivity of a YBCO single crystal has been studied as a function of the relative orientation of the crystal axes and a magnetic field rotating in the Cu-O planes. Measurements were carried out at several temperatures below T_c and at a fixed field of 30 kOe.
Aubin, H., Behnia, K., Ribault, M., Gagnon, R., Taillefer, L.   +4 more
openaire   +2 more sources

Positioning a mobile robot in a closed area with a map of markers

Journal of Education, Health and Sport, 2019
The article presents issues related to the positioning of mobile robots in a closed area. The method of positioning using photogrammetry methods based on the analysis of specially created unique square-shaped markers is presented.
Oleksandr Sokolov, Aleksandra Mreła, Mateusz Józefowicz, Krzysztof Rydel, Sebastian Meszyński   +4 more
doaj   +3 more sources

On quantum states for angular position and angular momentum of light

Journal of Optics
Abstract In the present paper we construct a properly defined quantum state ψ ( θ ) expressed ...
Bo-Sture K Skagerstam, Per K Rekdal
openaire   +2 more sources

Study of shearer positioning method using strapdown inertial navigation system

Gong-kuang zidonghua, 2016
For problem that shearer on fully mechanized coal face has lower positioning accuracy, a shearer positioning method using strapdown inertial navigation system based on Rodrigues parametric method was proposed.
ZHANG Jinyao, LI Wei, YANG Hai, SI Zhuoyin, YING Baohua   +4 more
doaj   +1 more source

Near-perfect sorting of orbital angular momentum and angular position states of light

Optics Express, 2012
We present a novel method for efficient sorting of photons prepared in states of orbital angular momentum (OAM) and angular position (ANG). A log-polar optical transform is used in combination with a holographic beam-splitting method to achieve better mode discrimination and reduced cross-talk than reported previously.
O'Sullivan, Malcolm N., Mirhosseini, Mohammad, Malik, Mehul, Boyd, Robert W.   +3 more
openaire   +4 more sources

Phase Angle as an Early Functional Biomarker of Cancer‐Related Fatigue in Pediatric Oncology: A Prospective Longitudinal Study

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background Pediatric cancer remains a leading cause of morbidity and mortality worldwide, particularly in low‐and middle‐income countries. Cancer treatment may impair nutritional status, alter body composition, and exacerbate cancer‐related fatigue (CRF).
Luís Carlos Lopes‐Junior, Luiz Claudio Barreto Silva Neto, Fabiano Kenji Haraguchi, Letícia Batista de Azevedo, Marcelo Brenner Nascimento Carlini, Raphael Manhães Pessanha, Mariana Rabello Laignier, Wesley Rocha Grippa, Tania Mara Lopes Bitti Bortolini, Gláucia Zouain‐Figueiredo, Regina Aparecida Garcia de Lima, Liliana Vasquez   +11 more
wiley   +1 more source

Exploiting Angular Diversity for Passive Positioning VLC Systems

IEEE Open Journal of the Communications Society
Retroreflective visible light communications (R-VLC) have been recently proposed for providing ultra-low power positioning and communications in the framework of the Internet of Things.
Alejandro Lopez Barrios, Borja Genoves Guzman, Maximo Morales-Cespedes   +2 more
doaj   +1 more source